package com.miaoxie.forum.module.auth.shared.utils;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import java.lang.annotation.Annotation;
import java.util.Map;

/**
 * Created by miaoxie on 2017/2/5.
 * <p/>
 * Spring context utility
 */
public class SpringContextUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;


    public void setApplicationContext(ApplicationContext applicationContext)  {
        setContext(applicationContext);
    }

    public static void setContext(ApplicationContext applicationContext){
        SpringContextUtil.applicationContext = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static Object getBean(String name) throws BeansException {
        return applicationContext.getBean(name);
    }

    public static <T> T getBean(String name, Class<T> requiredType) throws BeansException {
        return (T) applicationContext.getBean(name, requiredType);
    }

    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }

    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.isSingleton(name);
    }

    public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getType(name);
    }

    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getAliases(name);
    }

    public Map<String, Object> getBean(Class<? extends Annotation> annotationType){
        return applicationContext.getBeansWithAnnotation(annotationType);
    }
}
